I live in western India where summer temperature ( Highs ) is 40-46 degree Celsius (104 - 115 degree F ) everyday during day time , my tube amp is AES SuperAmp Signature 35 wpc with 4xKT88 , 2x E88CC and 2x6BQ5 . I have A.C. fitted in the listening room.
I have three vents ( size 55 x 55 mm each ) with holes in the bottom plate of my amp chassis and installed a fan 50 x 50 x 10 mm ( 12 Volt ) over only one vent to push the air from bottom of the amp into the amp interiors . The other two vents are without fans. More ever on the top of the amp , under each power tube KT88, there are 6-8 small holes in the metal chassis around the tube socket , from where the hot air escapes upward brushing the glass of each tube. This arrangement keeps the heat of amp under reasonable control .
I am thinking to add two more fans of 50 x 50 mm under the other two vents also , but not sure if that would be too much air to blow into the amp !
I have three vents ( size 55 x 55 mm each ) with holes in the bottom plate of my amp chassis and installed a fan 50 x 50 x 10 mm ( 12 Volt ) over only one vent to push the air from bottom of the amp into the amp interiors . The other two vents are without fans. More ever on the top of the amp , under each power tube KT88, there are 6-8 small holes in the metal chassis around the tube socket , from where the hot air escapes upward brushing the glass of each tube. This arrangement keeps the heat of amp under reasonable control .
I am thinking to add two more fans of 50 x 50 mm under the other two vents also , but not sure if that would be too much air to blow into the amp !